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W2017669079 abstract "The critical problem of matroid theory can be posed in the more general context of finite relations. Given a relation R between the finite sets S and T , the critical problem is to determine the smallest number n such that there exists an n -tuple ( u 1 ,…, u n ) of elements from T such that for every x in S , there exists a u 1 such that xRu i . All the enumerative results, in particular, the Tutte decomposition and Möbius function formula, can be rephrased so that they still hold. In this way, we obtain a uniform approach to all the classical critical problems." @default.
W2017669079 created "2016-06-24" @default.
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W2017669079 date "1980-11-01" @default.
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W2017669079 title "The Rédei function of a relation" @default.
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W2017669079 doi "https://doi.org/10.1016/0097-3165(80)90023-0" @default.
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